BioAmber's current status is bankrupt. There's no question. The assets were sold in liquidation for $4.34M. There are no more operations, no sources of income, to pay the debt owed.
Once the checks are written for the small recoveries of the 2 secured creditors who get anything, this returns to the US bankruptcy court for the final discharge of the remaining debt and the equity (the shares). The company disappears after that, and shareholders lose 100% of their investment in this stock.